JPS54103385A - Temperature rise detecting circuit of printed substrate - Google Patents

Temperature rise detecting circuit of printed substrate

Info

Publication number
JPS54103385A
JPS54103385A JP1086078A JP1086078A JPS54103385A JP S54103385 A JPS54103385 A JP S54103385A JP 1086078 A JP1086078 A JP 1086078A JP 1086078 A JP1086078 A JP 1086078A JP S54103385 A JPS54103385 A JP S54103385A
Authority
JP
Japan
Prior art keywords
printed substrate
temperature
pulse
temperature rise
detecting circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP1086078A
Other languages
Japanese (ja)
Inventor
Akira Yasuda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP1086078A priority Critical patent/JPS54103385A/en
Publication of JPS54103385A publication Critical patent/JPS54103385A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0201—Thermal arrangements, e.g. for cooling, heating or preventing overheating
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0266—Marks, test patterns or identification means

Landscapes

  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Structure Of Printed Boards (AREA)

Abstract

PURPOSE: To simplify the constitution of temperature rise detecting circuit and facilitate packaging thereof, by using a resistance element which changes in resistance due to temperature changes as the pulse changing element in a monostable multivibrator.
CONSTITUTION: As far as the temperature of the printed substrate is within the specified temperature range, the pulse width of a monostable multivibrator 2, as shown by C, is shorter than the pulse width of the clock pulse, so that the AND output of an AND gate 3 is at low level, not changing FF 5. When the temperature of the printed substrate exceeds the specified value, the resistance value of a resistance element R increases, and the pulse width of the monostable mutivibrator 2 becomes longer than the pulse wifth of the clock pulse, so that an output, as shown by (d), will be created in the AND gate 3, thereby inverting the FF5. As a result, the temperature rise of the printed substrate is detected by the output shown by (e).
COPYRIGHT: (C)1979,JPO&Japio
JP1086078A 1978-01-31 1978-01-31 Temperature rise detecting circuit of printed substrate Pending JPS54103385A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1086078A JPS54103385A (en) 1978-01-31 1978-01-31 Temperature rise detecting circuit of printed substrate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1086078A JPS54103385A (en) 1978-01-31 1978-01-31 Temperature rise detecting circuit of printed substrate

Publications (1)

Publication Number Publication Date
JPS54103385A true JPS54103385A (en) 1979-08-14

Family

ID=11762102

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1086078A Pending JPS54103385A (en) 1978-01-31 1978-01-31 Temperature rise detecting circuit of printed substrate

Country Status (1)

Country Link
JP (1) JPS54103385A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5687831A (en) * 1979-12-20 1981-07-16 Ricoh Elemex Corp Temperature detector
WO1998039336A1 (en) * 1997-03-05 1998-09-11 Otsuka Kagaku Kabushiki Kaisha Process for producing exo-methylenepenam compounds

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS502860U (en) * 1973-05-17 1975-01-13

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS502860U (en) * 1973-05-17 1975-01-13

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5687831A (en) * 1979-12-20 1981-07-16 Ricoh Elemex Corp Temperature detector
WO1998039336A1 (en) * 1997-03-05 1998-09-11 Otsuka Kagaku Kabushiki Kaisha Process for producing exo-methylenepenam compounds
US6339152B1 (en) 1997-03-05 2002-01-15 Otsuka Kagaku Kabushiki Kaisha Process for producing exo-methylenepenam compounds

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